This article outlines how to implement passwordless sign-in in a FlutterFlow web app using Firebase Authentication. It explains how to send a magic link to a user's email for authentication, handle the login with Firebase's email link sign-in method, and redirect the user upon successful authentication. This method improves security and user experience by removing the need for passwords.
Steps:
FlutterFlow Setup:
Create a project in FlutterFlow and connect it with Firebase.
Set up Firebase Authentication with email link sign-in enabled.
Firebase Setup:
Create a Firebase project and enable email link sign-in in Firebase Authentication settings.
Add the FlutterFlow project domain to Firebase's Authorized Domains.
Creating Pages:
Auth Page: Collect the user's email and send the magic link.
Process Page: Handle the authentication by verifying the email.
Home Page: Redirect users after successful login.
Implementing Custom Actions:
sendSignInLinkToEmail: Sends the magic link to the user's email.
handleRedirect: Verifies the link when the user clicks it and signs them in.
Redirect After Login: After successful authentication, the user is redirected to the Home Page.
Code Highlights:
Custom actions are used to handle sending the magic link and processing the email link when the user clicks it.
SharedPreferences is used to store and retrieve the user's email during the sign-in process.
For more detailed information, you can visit
https://www.flutterflowdevs.com/blog/password-less-sign-in-using-firebase-in-flutterflow-web